银川城市土壤中有机氯农药残留及其潜在风险  

Residual and Potential Risk of Organochlorine Pesticides in Urban Soils of Yinchuan City

作　　者：王伟[1] 李兴红[2] 陆海[1] 王喜智[1] 蒋湘宁[1] 

机构地区：[1]北京林业大学,北京100083 [2]中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室,北京100085

出　　处：《温州大学学报（自然科学版）》2008年第2期32-37,共6页Journal of Wenzhou University(Natural Science Edition)

基　　金：国家自然科学基金项目(20607026)

摘　　要：利用GC-ECD方法测定了银川市城市土壤(城市公园、绿地及郊区农田)中典型有机氯农药六氯苯、六六六和滴滴涕的含量和组成特征.结果表明,六氯苯的残留量为0.0729–1.244μg·kg-1(中值:0.350μg·kg-1),六六六的残留量为0.306–74.219μg·kg-1(中值:0.852μg·kg-1),滴滴涕的残留量为0.284–1068.428μg·kg-1(中值:2.236μg·kg-1).同其它地区相比,银川市城市土壤中六氯苯、六六六和滴滴涕的残留量很低,几乎不存在有机氯农药污染土壤的现象.不过,个别采样点存在滴滴涕污染的潜在生态风险,还需进一步探讨.This study was conducted on concentrations and compositions of typical organochlorine pesticides （HCB, HCHs, DDTs） in urban soils （including urban park, Greenland and suburb farmland） from the city of Yinchuan with GC-ECD. The results indicate that the residual levels of HCB, ∑HCHs and ∑DDTs are 0.0729-1.244μg·kg^-1 （median value： 0.350μg·kg^-1）, 0.306-74.219μg·kg^-1 （median value： 0.852μg·kg^-1） and 0.284-1068.428μg·kg^-1（median value： 2.236μg·kg^-1） respectively. Compared with other areas, the residual levels are lower; and the phenomenon that organochlorine pesticides pollute soils does almost not happen here. However, there is potential ecological risk of DDTs pollutants in individual sampling sites, which needs further studying

关 键 词：银川 土壤 有机氯农药 

分 类 号：X825[环境科学与工程—环境工程]